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| author |   Frederic Weisbecker <fweisbec@gmail.com> | 2017-01-31 04:09:19 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2017-02-01 09:13:47 +0100 |
| commit | 7fb1327ee9b92fca27662f9b9d60c7c3376d6c69 (patch) | |
| tree | 7a75b34cf7db3d04a6e70b7f78c0b886ab45074a /fs/proc/uptime.c | |
| parent | sched/cputime: Remove the unused INIT_CPUTIME macro (diff) | |
| download | linux-dev-7fb1327ee9b92fca27662f9b9d60c7c3376d6c69.tar.xz linux-dev-7fb1327ee9b92fca27662f9b9d60c7c3376d6c69.zip | |
sched/cputime: Convert kcpustat to nsecs
Kernel CPU stats are stored in cputime_t which is an architecture
defined type, and hence a bit opaque and requiring accessors and mutators
for any operation.
Converting them to nsecs simplifies the code and is one step toward
the removal of cputime_t in the core code.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1485832191-26889-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/proc/uptime.c')
| -rw-r--r-- | fs/proc/uptime.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c index 33de567c25af..7981c4ffe787 100644 --- a/fs/proc/uptime.c +++ b/fs/proc/uptime.c @@ -5,23 +5,20 @@ #include <linux/seq_file.h> #include <linux/time.h> #include <linux/kernel_stat.h> -#include <linux/cputime.h> static int uptime_proc_show(struct seq_file *m, void *v) { struct timespec uptime; struct timespec idle; - u64 idletime; u64 nsec; u32 rem; int i; - idletime = 0; + nsec = 0; for_each_possible_cpu(i) - idletime += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE]; + nsec += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE]; get_monotonic_boottime(&uptime); - nsec = cputime64_to_jiffies64(idletime) * TICK_NSEC; idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem); idle.tv_nsec = rem; seq_printf(m, "%lu.%02lu %lu.%02lu\n", |